Vending machine



FIG. 1 is a top front right side perspective view of a vending machine showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines in the drawings represent unclaimed environmental subject matter. 

I claim the ornamental design for a vending machine, as shown and described. 